I started watching Longmire last night, watched the pilot episode.
I've read the first 5 books in the series, and that has ruined the TV show for me, based on watching that first episode.
The characters on the TV show are totally mis-cast, if you ask me.
Walt Longmire, in the books, was an offensive lineman for USC, before he went to Vietnam. So he should be a big guy. The guy in the TV show does a good job acting-wise, but is too skinny/small.
His best friend, Henry Standing Bear, played football for Cal, and was U.S. special forces, bigger, and more muscular than Walt Longmire. Yet in the TV series he's played by skinny Lou Diamond Phillips o_O
Walt's deputy, Vic Moretti, in the books is a rave-haired Italian-American beauty ex-cop from Philly. Think Marisa Tomei from 'My Cousin Vinny', but less girly. In the TV show, Katie Sackhoff plays Vic, and she's certainly pretty enough and for the cop part can be tough. But she still has her hair dyed blonde like in Battle Star Galactica, she should go back to her natural hair color. And she doesn't even try to do the Philly accent, even though in the show she is still an ex-cop from Philly.
The daughter, too, in the books is just supposed to be this young (late 20's) bubbly stunning beauty who works at a law firm in Philly. The gal in the show is certainly cute, but a bit too old and not the gorgeous knockout the character is supposed to be.
I guess reading the books first was a bad idea